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Finding the Fourth Proportional to 8,691.60, 13,036.40 and 2,535.60

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Solution

The fourth proportional to 8,691.60, 13,036.40 and 2,535.60 is: 3,803.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.60 : 13,036.40 = 2,535.60 : x
  2. Step 2: Convert to fraction form
    8,691.60/13,036.40 = 2,535.60/x
  3. Step 3: Cross multiply
    8,691.60x = 13,036.40 × 2,535.60
  4. Step 4: Simplify right side
    8,691.60x = 33,055,095.84
  5. Step 5: Solve for x
    x = 33,055,095.84/8,691.60
  6. Step 6: Final answer
    x = 3,803.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.